whats the output of following code and why? [on hold]

Starting code and condition you are required to use nested loops to generate the following patterns.

#include <stdio.h>
#include <math.h>
void DrawPattern(int w, int h, int radius) {
 int i=0, j=0, hw = w/2, hh = h/2;
 for(j=0;j<h;++j) {
 for(i=0;i<w;++i) {
 //add code here
 }
 }
}
int main() {
 DrawPattern(15, 15, 7);
 return 0;
}